DL ORD CDG service starts from 29OCT11, and is replacing AF on this route given the departure time is identical and "both" are flying 5 times a week (no flights on Mondays and Wednesdays). Skyteam is cutting capacity on Trans-Atlantic route so it doesn't make sense for DL to add capacity on non hub-to-hub routes anyways.
DL592 ORD1810 - 0835+1CDG 767 x13
AF667 ORD1820 - 0835+1CDG 332 x13
DL593 CDG1035 - 1340ORD 767 x13
AF664 CDG1035 - 1245ORD 332 x13
http://airlineroute.net/2011/06/12/dlaf-ordcdg-w11/